Captain Underpants: The First Epic Movie

In Piqua, Ohio, best friends and next-door neighbors George Beard and Harold Hutchins create comic books, their latest creation being a superhero named Captain Underpants. They are fourth-graders at Jerome Horwitz Elementary School, where their excessive pranks to cheer up their fellow students put them at odds with their cruel principal Benjamin Krupp. One day, they tamper with their classmate Melvin Sneedly's invention, the Turbo Toilet 2000, to lift the other students' spirits, but Mr. Krupp uses one of Melvin's other inventions to record the boys enacting the prank. He prepares to put George and Harold in separate classes in hopes of ending their friendship.

George hypnotizes Mr. Krupp using a 3-D Hypno-Ring from a cereal box prize before Mr. Krupp can sign the papers to separate George and Harold. They command Mr. Krupp to become Captain Underpants, leading him to cause trouble around town. After taking him to their treehouse, the boys discover that they can turn Captain Underpants back into Mr. Krupp by splashing water on him and back into Captain Underpants by snapping their fingers. They come up with a clever plan to keep Mr. Krupp from separating them by convincing Captain Underpants that Mr. Krupp is his secret identity. His change in personality attracts the attention of the school's shy lunch lady Edith.

Meanwhile, Professor Pee-Pee Diarrheastein Poopypants Esquire is hired as the school's new science teacher, though George and Harold are suspicious of his violent behavior. Poopypants, who invented a Nobel Prize-winning "sizerator", is sick of never being taken seriously due to his name, and seeks to eliminate all laughter. George and Harold continue with their plan by making the school a livelier place, with Captain Underpants as principal. However, a rainstorm turns Captain Underpants back into Mr. Krupp, who officially places George and Harold in separate classes, because their plan failed.

Poopypants and Melvin grow the Turbo Toilet 2000, power it with Edith's toxic leftovers, and use it to attack the school. Poopypants uses Melvin's brain, which lacks the part that causes laughter, to power a ray that turns the students into dull, humorless zombies. Captain Underpants tries to stop them but, having no superpowers, is thrown into the toxic waste. George and Harold are captured, but the power of a joke that made them friends in kindergarten overloads the Turbo Toilet 2000, returning the kids to normal and trapping Melvin in giant toilet paper. The toxic leftovers give Captain Underpants real superpowers and, with George and Harold's help, he defeats and shrinks Poopypants, who escapes on a bee.

Unable to control Captain Underpants forever, George and Harold destroy the 3-D Hypno-Ring to permanently change him back into Mr. Krupp, but swear to remain friends. However, after realizing that Mr. Krupp would be nicer if he had friends, they set him and Edith up on a date, causing Krupp to have a change of heart and return the comics he confiscated from George and Harold. Meanwhile, the toxic waste from the Turbo Toilet 2000 transforms the toilets at a scrapyard into an army of Talking Toilets, which attack the restaurant where Mr. Krupp and Edith are dining. After unwittingly snapping his fingers, Mr. Krupp is once again transformed into Captain Underpants, to Edith's surprise and admiration, and he flies away with George and Harold to face their next adventure together.

The main cast of the film played by Ed Helms, (Mr. Krupp/Captain Underpants) Kevin Hart (George Beard), Nick Kroll (Professor Poopypants), and Thomas Middleditch (Harold Hutchins).

• Kevin Hart as George Beard, a fourth-grade student who is best friends with Harold. Together, they make comic books, with George writing stories and Harold illustrating them. He is typically calmer in tough situations.
• Ed Helms as Mr. Benjamin “Benny” Krupp / Captain Underpants, the grumpy and mean principal of Jerome Horwitz Elementary School. George and Harold hypnotize him into becoming Captain Underpants, a superhero they created, to stop him from putting them in separate classes.^[8]
• Nick Kroll as Professor Pee-Pee Diarrheastein Poopypants Esquire, a ruthless and humorless German-accented mad scientist from New Swissland and the film's antagonist. He plots to take over the world to eliminate all laughter after years of being constantly disparaged for his name.^[8]
• Thomas Middleditch as Harold Hutchins, a fourth-grade student who is best friends with George. He illustrates books while George writes stories. He is usually cautious and worrisome in tough situations. Harold is friendly and has a fondness for dolphins.^[8][9]
• Jordan Peele as Melvin Sneedly, George and Harold's nerdy enemy. He is a child prodigy who becomes Professor Poopypants' sidekick due to lacking a sense of humor.^[8]
• Kristen Schaal as Edith, the shy school lunch lady and the love interest of Mr. Krupp. She is first created for the film, and is partially based on Mrs. Edith Anthrope from the book series, who is featured as a separate character.^[9]

DreamWorks Pictures and DreamWorks Animation's first interests in the film distribution rights to the Captain Underpants book series dates back to when the first book installment was published on September 1, 1997, but creator Dav Pilkey declined. In a 2000 interview with Karen Heller from Philly.com, Pilkey expressed his first interests in Chris Farley as Captain Underpants, adding that he would only want a Captain Underpants film to be animated.^[10] In one effort to persuade him, DreamWorks gave Pilkey a tour around their studio with everyone wearing underpants over their pants, which made him laugh.^[11] On October 19, 2011, his representatives indicated Pilkey was ready, and DreamWorks Animation won the rights in an auction.^[12] On October 25, 2013, Rob Letterman was announced as the director, and Nicholas Stoller was announced as the scriptwriter,^[13] and both of the two had previously worked together on the 2010 20th Century Fox film Gulliver's Travels. On January 21, 2014, the cast was announced: Ed Helms as Captain Underpants and Mr. Krupp, Kevin Hart as George Beard, Thomas Middleditch as Harold Hutchins, Nick Kroll as George and Harold's "insidious villain" Professor Poopypants, and Jordan Peele as George and Harold's "nerdy nemesis" Melvin Sneedly.^[8]

On June 12, 2014, DreamWorks Animation announced a January 13, 2017, release date.^[15] Following DreamWorks Animation's reorganization and the corporate shutdown of Pacific Data Images on January 22, 2015, due to the box-office failures of their following two different 2014 fully-fledged feature-form films, Mr. Peabody & Sherman and Penguins of Madagascar, the studio announced that the film would be produced outside of the studio's pipeline at a significantly low cost,^[16] it was instead animated at Mikros Image in Montreal, Canada, and at Technicolor Animation Productions in France, and therefore looks identical to Pilkey's original drawing style, as well as differently than many DreamWorks Pictures and DreamWorks Animation's films.^[17] A month later, Letterman left the project but came back as an executive producer, and David Soren, the director of the 2013 film Turbo, entered talks to direct the film.^[18]

During production, Pilkey got to work closely with Soren. He was relieved that Soren was directing since he was a fan of Turbo. In an interview with Los Angeles Times, Pilkey said: "Once I met David, it was like a huge load fell off my back; I was like, 'I don't even have to think about this anymore. Just send me a couple of tickets to the premiere.'"^[11] Commenting back, Soren said, "In a way, the controversy over the books ended up being liberating for the film. Normally on an animated movie, you're trying to appeal to every possible demographic, and often that results in your content being watered down a little bit. Obviously, we hope we get as wide of an audience as possible. But it's likely that if people have issues with the books they may have issues with the movie too, and we didn't feel like we needed to waste a lot of time trying to rope them in. It allowed us to make the purest version of the movie."^[11] Soren also said that he took inspiration from John Hughes films. In an interview with MovieFreak, he mentioned:

"We actually looked at a lot of John Hughes movies for inspiration, like Ferris Bueller's Day Off and Weird Science. John Hughes had this great knack for making comedies like this. Both of those movies have great friendships at the center of them. He seemed to be able to tap into the voice of a generation. They're very funny, all of his movies, but they are also poignant and they actually have meaningful things to say, which I think is why they have stood the test of time. So there's timelessness to his work that we were attempting to go for with this."^[19]

The soundtrack is produced by Adam Anders and Peer Åström and featured music from Andy Grammer, Adam Lambert, Cold War Kids member Nathan Willett, and Lil Yachty, along with the theme song written by "Weird Al" Yankovic.^[20] The album featuring 11 tracks was released digitally on June 2, 2017, by Virgin Records and Deep Well Records.^[21] The original score was scored by Theodore Shapiro, which was released into a 24-track album through Back Lot Music on June 9.^[20]